/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/

#ifdef HAVE_CONFIG_H
#include <conf.h>
#endif

#include <string.h>
#include "crypt.h"

char *jcrypt (char *pszPlain)
{
	int i, t, len;
	static char szCrypt [20];

len =(int) strlen (pszPlain);
if (len > 8)
	len = 8;

for (i = 0; i < len; i++) {
	szCrypt [i] = 0;
	for (t = 0; t < 8; t++) {
		szCrypt [i] ^= (pszPlain [t] ^ pszPlain [i % (t + 1)]);
		szCrypt [i] %= 90;
		szCrypt [i] += 33;
		}
	}
szCrypt [i] = 0;
return reinterpret_cast<char*> (szCrypt);
}

//------------------------------------------------------------------------------

static const ushort crc16Codes [256] = {
   0x0000,0x1189,0x2312,0x329b,0x4624,0x57ad,0x6536,0x74bf,
   0x8c48,0x9dc1,0xaf5a,0xbed3,0xca6c,0xdbe5,0xe97e,0xf8f7,
   0x1891,0x0918,0x3b83,0x2a0a,0x5eb5,0x4f3c,0x7da7,0x6c2e,
   0x94d9,0x8550,0xb7cb,0xa642,0xd2fd,0xc374,0xf1ef,0xe066,
   0x3122,0x20ab,0x1230,0x03b9,0x7706,0x668f,0x5414,0x459d,
   0xbd6a,0xace3,0x9e78,0x8ff1,0xfb4e,0xeac7,0xd85c,0xc9d5,
   0x29b3,0x383a,0x0aa1,0x1b28,0x6f97,0x7e1e,0x4c85,0x5d0c,
   0xa5fb,0xb472,0x86e9,0x9760,0xe3df,0xf256,0xc0cd,0xd144,
   0x6244,0x73cd,0x4156,0x50df,0x2460,0x35e9,0x0772,0x16fb,
   0xee0c,0xff85,0xcd1e,0xdc97,0xa828,0xb9a1,0x8b3a,0x9ab3,
   0x7ad5,0x6b5c,0x59c7,0x484e,0x3cf1,0x2d78,0x1fe3,0x0e6a,
   0xf69d,0xe714,0xd58f,0xc406,0xb0b9,0xa130,0x93ab,0x8222,
   0x5366,0x42ef,0x7074,0x61fd,0x1542,0x04cb,0x3650,0x27d9,
   0xdf2e,0xcea7,0xfc3c,0xedb5,0x990a,0x8883,0xba18,0xab91,
   0x4bf7,0x5a7e,0x68e5,0x796c,0x0dd3,0x1c5a,0x2ec1,0x3f48,
   0xc7bf,0xd636,0xe4ad,0xf524,0x819b,0x9012,0xa289,0xb300,
   0xc488,0xd501,0xe79a,0xf613,0x82ac,0x9325,0xa1be,0xb037,
   0x48c0,0x5949,0x6bd2,0x7a5b,0x0ee4,0x1f6d,0x2df6,0x3c7f,
   0xdc19,0xcd90,0xff0b,0xee82,0x9a3d,0x8bb4,0xb92f,0xa8a6,
   0x5051,0x41d8,0x7343,0x62ca,0x1675,0x07fc,0x3567,0x24ee,
   0xf5aa,0xe423,0xd6b8,0xc731,0xb38e,0xa207,0x909c,0x8115,
   0x79e2,0x686b,0x5af0,0x4b79,0x3fc6,0x2e4f,0x1cd4,0x0d5d,
   0xed3b,0xfcb2,0xce29,0xdfa0,0xab1f,0xba96,0x880d,0x9984,
   0x6173,0x70fa,0x4261,0x53e8,0x2757,0x36de,0x0445,0x15cc,
   0xa6cc,0xb745,0x85de,0x9457,0xe0e8,0xf161,0xc3fa,0xd273,
   0x2a84,0x3b0d,0x0996,0x181f,0x6ca0,0x7d29,0x4fb2,0x5e3b,
   0xbe5d,0xafd4,0x9d4f,0x8cc6,0xf879,0xe9f0,0xdb6b,0xcae2,
   0x3215,0x239c,0x1107,0x008e,0x7431,0x65b8,0x5723,0x46aa,
   0x97ee,0x8667,0xb4fc,0xa575,0xd1ca,0xc043,0xf2d8,0xe351,
   0x1ba6,0x0a2f,0x38b4,0x293d,0x5d82,0x4c0b,0x7e90,0x6f19,
   0x8f7f,0x9ef6,0xac6d,0xbde4,0xc95b,0xd8d2,0xea49,0xfbc0,
   0x0337,0x12be,0x2025,0x31ac,0x4513,0x549a,0x6601,0x7788  };

//------------------------------------------------------------------------------

ushort Crc16 (ushort crc, const ubyte * bufP, long bufSize)
{
for (; bufSize; bufSize--, bufP++)
   crc = (crc >> 8) ^ crc16Codes [*bufP ^ (crc & 0xff)];
return crc;
}

//------------------------------------------------------------------------------

static const uint crc32Codes [256] = {
   0x00000000,0x77073096,0xee0e612c,0x990951ba,0x076dc419,0x706af48f,0xe963a535,0x9e6495a3,
   0x0edb8832,0x79dcb8a4,0xe0d5e91e,0x97d2d988,0x09b64c2b,0x7eb17cbd,0xe7b82d07,0x90bf1d91,
   0x1db71064,0x6ab020f2,0xf3b97148,0x84be41de,0x1adad47d,0x6ddde4eb,0xf4d4b551,0x83d385c7,
   0x136c9856,0x646ba8c0,0xfd62f97a,0x8a65c9ec,0x14015c4f,0x63066cd9,0xfa0f3d63,0x8d080df5,
   0x3b6e20c8,0x4c69105e,0xd56041e4,0xa2677172,0x3c03e4d1,0x4b04d447,0xd20d85fd,0xa50ab56b,
   0x35b5a8fa,0x42b2986c,0xdbbbc9d6,0xacbcf940,0x32d86ce3,0x45df5c75,0xdcd60dcf,0xabd13d59,
   0x26d930ac,0x51de003a,0xc8d75180,0xbfd06116,0x21b4f4b5,0x56b3c423,0xcfba9599,0xb8bda50f,
   0x2802b89e,0x5f058808,0xc60cd9b2,0xb10be924,0x2f6f7c87,0x58684c11,0xc1611dab,0xb6662d3d,
   0x76dc4190,0x01db7106,0x98d220bc,0xefd5102a,0x71b18589,0x06b6b51f,0x9fbfe4a5,0xe8b8d433,
   0x7807c9a2,0x0f00f934,0x9609a88e,0xe10e9818,0x7f6a0dbb,0x086d3d2d,0x91646c97,0xe6635c01,
   0x6b6b51f4,0x1c6c6162,0x856530d8,0xf262004e,0x6c0695ed,0x1b01a57b,0x8208f4c1,0xf50fc457,
   0x65b0d9c6,0x12b7e950,0x8bbeb8ea,0xfcb9887c,0x62dd1ddf,0x15da2d49,0x8cd37cf3,0xfbd44c65,
   0x4db26158,0x3ab551ce,0xa3bc0074,0xd4bb30e2,0x4adfa541,0x3dd895d7,0xa4d1c46d,0xd3d6f4fb,
   0x4369e96a,0x346ed9fc,0xad678846,0xda60b8d0,0x44042d73,0x33031de5,0xaa0a4c5f,0xdd0d7cc9,
   0x5005713c,0x270241aa,0xbe0b1010,0xc90c2086,0x5768b525,0x206f85b3,0xb966d409,0xce61e49f,
   0x5edef90e,0x29d9c998,0xb0d09822,0xc7d7a8b4,0x59b33d17,0x2eb40d81,0xb7bd5c3b,0xc0ba6cad,
   0xedb88320,0x9abfb3b6,0x03b6e20c,0x74b1d29a,0xead54739,0x9dd277af,0x04db2615,0x73dc1683,
   0xe3630b12,0x94643b84,0x0d6d6a3e,0x7a6a5aa8,0xe40ecf0b,0x9309ff9d,0x0a00ae27,0x7d079eb1,
   0xf00f9344,0x8708a3d2,0x1e01f268,0x6906c2fe,0xf762575d,0x806567cb,0x196c3671,0x6e6b06e7,
   0xfed41b76,0x89d32be0,0x10da7a5a,0x67dd4acc,0xf9b9df6f,0x8ebeeff9,0x17b7be43,0x60b08ed5,
   0xd6d6a3e8,0xa1d1937e,0x38d8c2c4,0x4fdff252,0xd1bb67f1,0xa6bc5767,0x3fb506dd,0x48b2364b,
   0xd80d2bda,0xaf0a1b4c,0x36034af6,0x41047a60,0xdf60efc3,0xa867df55,0x316e8eef,0x4669be79,
   0xcb61b38c,0xbc66831a,0x256fd2a0,0x5268e236,0xcc0c7795,0xbb0b4703,0x220216b9,0x5505262f,
   0xc5ba3bbe,0xb2bd0b28,0x2bb45a92,0x5cb36a04,0xc2d7ffa7,0xb5d0cf31,0x2cd99e8b,0x5bdeae1d,
   0x9b64c2b0,0xec63f226,0x756aa39c,0x026d930a,0x9c0906a9,0xeb0e363f,0x72076785,0x05005713,
   0x95bf4a82,0xe2b87a14,0x7bb12bae,0x0cb61b38,0x92d28e9b,0xe5d5be0d,0x7cdcefb7,0x0bdbdf21,
   0x86d3d2d4,0xf1d4e242,0x68ddb3f8,0x1fda836e,0x81be16cd,0xf6b9265b,0x6fb077e1,0x18b74777,
   0x88085ae6,0xff0f6a70,0x66063bca,0x11010b5c,0x8f659eff,0xf862ae69,0x616bffd3,0x166ccf45,
   0xa00ae278,0xd70dd2ee,0x4e048354,0x3903b3c2,0xa7672661,0xd06016f7,0x4969474d,0x3e6e77db,
   0xaed16a4a,0xd9d65adc,0x40df0b66,0x37d83bf0,0xa9bcae53,0xdebb9ec5,0x47b2cf7f,0x30b5ffe9,
   0xbdbdf21c,0xcabac28a,0x53b39330,0x24b4a3a6,0xbad03605,0xcdd70693,0x54de5729,0x23d967bf,
   0xb3667a2e,0xc4614ab8,0x5d681b02,0x2a6f2b94,0xb40bbe37,0xc30c8ea1,0x5a05df1b,0x2d02ef8d
   };

//------------------------------------------------------------------------------
// compute 32 bit CCITT crc from a table 
uint Crc32 (uint crc, const ubyte * bufP, long bufSize)
{
for (; bufSize; bufSize--, bufP++)
   crc = (crc >> 8) ^ crc32Codes [*bufP ^ (crc & 0xff)];
return crc;
}

//------------------------------------------------------------------------------

